How do you convert cm to pixels?

We use the formula: pixels = cm × DPI / 2.54. With 300 DPI (print standard), 10 cm = 1181 pixels. Resizing happens entirely in your browser, so the image never leaves your device. You can keep the aspect ratio or set exact dimensions depending on your needs.

What DPI do you use for CM conversion?

We default to 300 DPI for print quality. You can adjust DPI from 72 (web) to 600 (high-res print) in the settings. Resizing happens entirely in your browser, so the image never leaves your device. You can keep the aspect ratio or set exact dimensions depending on your needs.

What is 3.5 × 4.5 cm in pixels?

At 300 DPI, 3.5 × 4.5 cm = 413 × 531 pixels. This is the standard size for many visa and ID photos. Resizing happens entirely in your browser, so the image never leaves your device. You can keep the aspect ratio or set exact dimensions depending on your needs.

Can I use this for passport photos?

Yes! Enter the passport photo dimensions in cm and the tool converts to the exact pixel size. US passports use 5.1 × 5.1 cm (600 × 600px at 300 DPI).

Is this tool free to use?

Yes. There is no charge, no account, and no watermark on the output. Resizing happens entirely in your browser, so the image never leaves your device. You can keep the aspect ratio or set exact dimensions depending on your needs.

Resize Image in CM — Resize Image In Cm

Resize Image in CM

Centimeter resizing converts cm to pixels at 300 DPI automatically, so print and ID photos come out at exact physical sizes. Do it all here in your browser — free, private, and with no uploads.

Why it matters: Centimeter resizing converts cm to pixels at 300 DPI automatically, so print and ID photos come out at exact physical sizes.

How to resize images

1Upload your image. Everything stays in your browser — nothing is sent to a server.
2Pick a method — By Pixels for exact sizes, By % to scale proportionally, Aspect Ratio to reshape, or a Preset for social/print standards.
3Resize and download. Batch mode bundles every file into a single ZIP.

Best settings for this page: Open the tool, choose Resize Image in CM from the tabs, set your values, and download instantly.

All resizing runs locally in your browser. Your files are not uploaded to any server.

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